Well - - I tried downloading the OP manual for the 75C but Firefox says its an insecure site....... Not in YOUR manual and dealer has no idea. Call alternate dealership or regional service manager.
Maybe somebody will pop up who has a service manual that tells what the caution symbol is for.
Had a thought - - looked in my Kubota OP manual. In my OP manual that symbol indicates low oil pressure.
So....... check you engine oil level and does the symbol go out if engine is operated at rpms above idle.
Wouldn't hurt to check engine coolant level also.
Otherwise - sorry, no answers here.